who knows how the Absorption parameter on the OPT-PROP card can be defined from Absorption length? for example if Absorption length is 10cm, is the Absorption Coefficient equal to 0.1 (1/cm)?
the definition you wrote is correct. You can find more details in this topic (it deals with the diffusion coefficient, but the settings is simmilar):
Dear @vojtech.stransky ,
Thanks for your help.
I want to use the Eventbin card to calculate the Optical photons and mark the result of the Geant4 bench, but if I try to make a difference between them, can you help me?
I am not familiar with Geant4, so I cannot help with that. In case you have any question regarding EVENTBIN, feel free to ask.
A post was split to a new topic: Calculate number of optical photons